Margaret's journey into the world of nutrition began while working as an "Acting Dietitian" at the Antioch tea room and exploring the writings (the book Let's Get Well) of influential and controversial nutritionist Adelle Davis.[6][3] Her personal health struggles, including a chronic infection following the birth of her second child, led her to question Western medicine and seek alternative approaches for healing.
Margaret began incorporating an organic diet consisting of fruits, vegetables, naturally raised meat and dairy, and supplements, like fish oil.[7][8] Embracing this regimen, her health improved significantly. Margaret and her husband, Philip, recognized the potential health benefits of natural eating. They began distributing nutrition books and taking supplement orders door-to-door, laying the foundation for their business. Their dedication and perseverance paid off, and by 1958, they opened their first health food store called the Builder’s Foundation in Lakewood, Colorado.[3][9] In 1963, the Iselys converted a cottage-style house into their new store, inspiring the name change to Vitamin Cottage.
Now it is run by the second-generation siblings Zephyr, Kemper, and Heather with more than 160 retail grocery stores in around 20 states of US.[10]
In 1958, Margaret ran for the State Senate as independent for the "Conservation of Life".[11][3] In that same year, Philip Isely founded the World Constitution and Parliament Association (WCPA), a global organization dedicated to peace, justice, and sustainable development. Margaret was actively involved alongside her husband and played a pivotal role in promoting the WCPA's principles and advocating for a world government that could address global challenges.[12][13] She surved as executive member and treasurer of WCPA.[14][15] Their home was picketed after a local newspaper, the Jefferson Sentinel, accused them of being communists. "One of our neighbors had us investigated because we passed out literature for the Peoples World Parliament," said Margaret, "but the FBI gave us a clean slate as harmless pacifists."[3]
Other
She has served in many food and industery related organizations:[16][11]
President - Natural Foundation for Nutritional Research[17]
President - Rocky Mountain Nutritional Foods Association[17]
The Margaret Ann Isely Foundation was established by her family and friends to fund projects that were important to Margaret.[21] This included the establishment of a nonprofit alternative health clinic in Colorado and a phytoplankton growing project aimed at mitigating global climate change.[22][23]